Tirien \t(i)-rien\ as a girl's name is a variant of Tirion (Welsh), and the meaning of Tirien is "kind, gentle".
The baby name Tirien sounds like Tirrien and Tirian. Other similar baby names are Adrien, Tinie, Darien, Eireen, Eirian, Terin, Eirinn, Eirin, Airin, Eiren, Aireen, Taren, Marien, Tarren, Tarin, Terie, Tiryon, Tiryan, Tivian, Torie and Treen.